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6 March 2014 1:04 pm ,
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Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Comb Jelly Genome Sheds Light on ... Light
21 December 2012 12:15 pm
Although comb jellies seem to be little more than tennis ball-sized blobs in the sea, these organisms are relatively sophisticated in how they use light. The creatures flash a blue-green light at predators, for example, possibly to startle them. Researchers studying the genome of the comb jelly, also known as a ctenophore, have discovered that the bioluminescent creatures pack in 10 proteins for generating light. They have other proteins called opsins that detect light, even though comb jellies lack eyes, the team reports today in BMC Biology. It's not clear what the opsins do in this animal. The genome is the first to be sequenced from a bioluminescent animal. Because ctenophores appear to sit at the base of the animal tree of life, the findings suggest that light-generating and sensing proteins evolved at the same time as multicellularity. Such proteins may have given rise to the diversity of light-sensing molecules seen in animals today, such as in the rods and cones in human eyes. And studying them, the researchers say, could lead to new insights into the origin of eyes and therapies for treating sight disorders.
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